Do we need to memorize the molar masses

General Discussion
1

Do we need to memorize the molar masses of the most common elements or are they always given in the IMAT

2

Usually, they are given, but
It is a good idea to memorize the molar masses of the top elements of the s and p groups of the periodic table. I think, I have seen questions where they were not given.

3

alright will do, thanks

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